From: Guenter Roeck <linux@roeck-us.net>
Date: Sun, 21 Sep 2014 22:04:53 +0000 (-0700)
Subject: Revert "percpu: free percpu allocation info for uniprocessor system"
X-Git-Tag: v3.4.106~172
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8e48aa5819ec9d87953110ca6ea2079b17d94524;p=thirdparty%2Fkernel%2Fstable.git

Revert "percpu: free percpu allocation info for uniprocessor system"

commit bb2e226b3bef596dd56be97df655d857b4603923 upstream.

This reverts commit 3189eddbcafc ("percpu: free percpu allocation info for
uniprocessor system").

The commit causes a hang with a crisv32 image. This may be an architecture
problem, but at least for now the revert is necessary to be able to boot a
crisv32 image.

Cc: Tejun Heo <tj@kernel.org>
Cc: Honggang Li <enjoymindful@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 3189eddbcafc ("percpu: free percpu allocation info for uniprocessor system")
Signed-off-by: Zefan Li <lizefan@huawei.com>
---

diff --git a/mm/percpu.c b/mm/percpu.c
index 5f6042b61ca8b..13b2eefabfdd3 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1907,8 +1907,6 @@ void __init setup_per_cpu_areas(void)
 
 	if (pcpu_setup_first_chunk(ai, fc) < 0)
 		panic("Failed to initialize percpu areas.");
-
-	pcpu_free_alloc_info(ai);
 }
 
 #endif	/* CONFIG_SMP */